22222221001 has 8 divisors (see below), whose sum is σ = 23393659680. Its totient is φ = 21050967168.

The previous prime is 22222220989. The next prime is 22222221019. The reversal of 22222221001 is 10012222222.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 22222221001 - 2⁷ = 22222220873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22222221061) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248970 + ... + 326236.

It is an arithmetic number, because the mean of its divisors is an integer number (2924207460).

Almost surely, 2^22222221001 is an apocalyptic number.

It is an amenable number.

22222221001 is a deficient number, since it is larger than the sum of its proper divisors (1171438679).

22222221001 is a wasteful number, since it uses less digits than its factorization.

22222221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92423.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 22222221001 its reverse (10012222222), we get a palindrome (32234443223).

It can be divided in two parts, 2222222 and 1001, that multiplied together give a palindrome (2224444222).

The spelling of 22222221001 in words is "twenty-two billion, two hundred twenty-two million, two hundred twenty-one thousand, one".